package com.minishift.android.utils;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Bitmap.Config;
import android.graphics.PorterDuff.Mode;
import android.os.Environment;

public class XUtils {

	public static int dp2px(Context context, float dpValue) {  
        final float scale = context.getResources().getDisplayMetrics().density;  
        return (int) (dpValue * scale + 0.5f);  
    }
	
    public static int px2dp(Context context, float pxValue) {  
        final float scale = context.getResources().getDisplayMetrics().density;  
        return (int) (pxValue / scale + 0.5f);  
    }  
    
    public static String getSDCardPath(){
    	if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
    		return Environment.getExternalStorageDirectory().toString();
    	}else{
    		return null;
    	}
    }
    
    /**
     * 转换图片成圆形
     * @param bitmap 传入Bitmap对象
     * @return
     */
    public Bitmap bitmap2Oval(Bitmap bitmap) {
            int width = bitmap.getWidth();
            int height = bitmap.getHeight();
            float roundPx;
            float left,top,right,bottom,dst_left,dst_top,dst_right,dst_bottom;
            if (width <= height) {
                    roundPx = width / 2;
                    top = 0;
                    bottom = width;
                    left = 0;
                    right = width;
                    height = width;
                    dst_left = 0;
                    dst_top = 0;
                    dst_right = width;
                    dst_bottom = width;
            } else {
                    roundPx = height / 2;
                    float clip = (width - height) / 2;
                    left = clip;
                    right = width - clip;
                    top = 0;
                    bottom = height;
                    width = height;
                    dst_left = 0;
                    dst_top = 0;
                    dst_right = height;
                    dst_bottom = height;
            }
             
            Bitmap output = Bitmap.createBitmap(width,
                            height, Config.ARGB_8888);
            Canvas canvas = new Canvas(output);
             
            final int color = 0xff424242;
            final Paint paint = new Paint();
            final Rect src = new Rect((int)left, (int)top, (int)right, (int)bottom);
            final Rect dst = new Rect((int)dst_left, (int)dst_top, (int)dst_right, (int)dst_bottom);
            final RectF rectF = new RectF(dst);

            paint.setAntiAlias(true);
             
            canvas.drawARGB(0, 0, 0, 0);
            paint.setColor(color);
            canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

            paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
            canvas.drawBitmap(bitmap, src, dst, paint);
            return output;
    }
}
